Steampunk NeoPixel Goggle Code.ino

/*
Need the library in the arduino IDE for `Adafruit neopixel' and the attiny85 driver


https://digistump.com/wiki/digispark/tutorials/connecting

*/

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif

#define LED 1

#define PIN 0

#define LOOPS 10

// brightness of brightest 2 to 254 must be even
#define BRIGHT 10

// Must be an even number
#define PIXELS 24

// Parameter 1 = number of pixels in strip
// Parameter 2 = Arduino pin number (most are valid)
// Parameter 3 = pixel type flags, add together as needed:
//   NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)
//   NEO_KHZ400  400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)
//   NEO_GRB     Pixels are wired for GRB bitstream (most NeoPixel products)
//   NEO_RGB     Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2)
Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXELS, PIN, NEO_GRB + NEO_KHZ800);

// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across
// pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input
// and minimize distance between Arduino and first pixel.  Avoid connecting
// on a live circuit...if you must, connect GND first.

void setup() {
  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket
  #if defined (__AVR_ATtiny85__)
    if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
  #endif
  // End of trinket special code


  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
  pinMode(LED,OUTPUT);
  delay(5000);
}

void loop() {
  // Some example procedures showing how to display to the pixels:
  for(int l=0; l<LOOPS; l++) {
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(BRIGHT, 0, 0), 50); // Red
    digitalWrite(LED,LOW);
    colorWipe(strip.Color(BRIGHT, 0, BRIGHT), 50); // Purple
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(BRIGHT, BRIGHT, BRIGHT), 50); // White
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(0, BRIGHT, BRIGHT), 50); // yellow
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(BRIGHT, BRIGHT, 0), 50); // Purple
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(0, 0, BRIGHT), 50); // blue
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(BRIGHT, 0, BRIGHT), 50); // Purple
    digitalWrite(LED,HIGH);
    colorWipe(strip.Color(BRIGHT, BRIGHT/2, BRIGHT), 50); // Blue
    digitalWrite(LED,LOW);
  }
  // Send a theater pixel chase in...
  theaterChase(strip.Color(BRIGHT/2, BRIGHT/2, BRIGHT/2), 50); // White
  digitalWrite(LED,HIGH);
  theaterChase(strip.Color(BRIGHT/2, 0, 0), 50); // Red
  digitalWrite(LED,LOW);
  theaterChase(strip.Color(0, 0, BRIGHT/2), 50); // Blue
  digitalWrite(LED,HIGH);

  rainbow(20);
  digitalWrite(LED,LOW);
  rainbowCycle(20);
  digitalWrite(LED,HIGH);
  //theaterChaseRainbow(50);
  //digitalWrite(LED,LOW );
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  //for(int l=0; l<LOOPS; l++) {
    for(uint16_t i=0; i<strip.numPixels()/2; i++) {
      strip.setPixelColor(i, c);
      strip.setPixelColor((strip.numPixels()-1)-i, c);
      strip.show();
      delay(wait);
    }
  //}
}

void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<(strip.numPixels())/2; i++) {
      strip.setPixelColor((strip.numPixels()-1)-i, Wheel((i+j) & 255));
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< strip.numPixels()/2; i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
      strip.setPixelColor((strip.numPixels()-1)-i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
  for (int j=0; j<(LOOPS*2); j++) {  //do LOOPS*2 cycles of chasing
    for (int q=0; q < 3; q++) {
      for (int i=0; i < strip.numPixels()/2; i=i+3) {
        strip.setPixelColor(i+q, c);    //turn every third pixel on
        strip.setPixelColor((strip.numPixels()-1)-(i+q), c);    //turn every third pixel on
      }
      strip.show();

      delay(wait);

      for (int i=0; i < strip.numPixels()/2; i=i+3) {
        strip.setPixelColor(i+q, 0);        //turn every third pixel off
        strip.setPixelColor((strip.numPixels()-1)-(i+q), 0);        //turn every third pixel off
      }
    }
  }
}

//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
  for (int j=0; j < 256; j++) {     // cycle all 256 colors in the wheel
    for (int q=0; q < 3; q++) {
      for (int i=0; i < strip.numPixels()/2; i=i+3) {
        strip.setPixelColor(i+q, Wheel( (i+j) % BRIGHT));    //turn every third pixel on
        strip.setPixelColor((strip.numPixels()-1)-(i+q), Wheel( (i+j) % BRIGHT));    //turn every third pixel on
      }
      strip.show();

      delay(wait);

      for (int i=0; i < strip.numPixels()/2; i=i+3) {
        strip.setPixelColor(i+q, 0);        //turn every third pixel off
        strip.setPixelColor((strip.numPixels()-1)-(i+q), 0);        //turn every third pixel off
      }
    }
  }
}

// Input a value 0 to BRIGHT to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}